Then: Gallagher played the second-youngest child of the Camdens. Like most of the Camden clan, he got into some trouble throughout the show, though he always had good intentions. Gallagher left '7th Heaven' during the eighth season to attend University of Southern California but returned for the tenth and final season.
Now: Gallagher had some guest roles on 'Bones,' 'Numb3rs,' and 'Smallville,' and will play a werewolf named Ray in several episodes of 'The Vampire Diaries'' upcoming third season. He also appeared in J.J. Abrams' 'Super 8.'